Dorman 645-747 Mass Air Flow Sensor Connector

Reliable Mass Air Flow Sensor Connector for GM Vehicles

The Dorman 645-747 Mass Air Flow Sensor Connector is designed to provide a secure and precise electrical connection for emission control systems. Engineered for select Chevrolet, GMC, and Pontiac models, this connector ensures consistent sensor performance and reliable vehicle operation.

• Color: Black for easy identification
• Female gender connector with 5 female blade terminals
• Wire gauge measurement: 20 AWG for optimal current flow
• Oval-shaped connector housing for secure fitment
• Connector material: durable tin plate (tin brass) terminals
• Includes 1 EGR valve harness and 5 butt connectors
• Wire harness length: 17 inches for flexible installation

Durable Design and Precise Fitment

This mass air flow sensor connector features a robust tin-plated brass terminal construction that resists corrosion and maintains electrical conductivity. The oval shape and female blade terminals are engineered to match factory specifications, ensuring compatibility with the original sensor wiring. With a 20-gauge wire size and five-wire configuration, the connector supports accurate signal transmission critical for emission control systems. The included EGR valve harness and butt connectors facilitate straightforward installation and repair.

Compatible Chevrolet, GMC, and Pontiac Models

This Dorman 645-747 connector is compatible with a range of GM vehicles, including Chevrolet Express 2500 and 3500, GMC Savana 2500 and 3500, Sierra 2500 HD and 3500 Classic, Silverado 2500 HD and 3500 Classic, Pontiac Prizm, and Vibe models. It is specifically designed to meet the electrical connector requirements for mass air flow sensors in these vehicles, ensuring proper fit and function.

Common Applications and Problem Resolution

• Restores faulty or damaged mass air flow sensor connections
• Eliminates intermittent sensor signal issues caused by poor contacts
• Prevents engine performance problems related to emission control wiring
• Replaces corroded or worn connectors to maintain sensor accuracy
• Supports repair of electrical harnesses in emission control systems

Installation Notes and Tips

Before installation, verify vehicle compatibility with the Dorman 645-747 part number. Ensure all connections are clean and free of corrosion. Use the included butt connectors to splice wires securely, and confirm that the female blade terminals are fully seated. Avoid exposing the connector to excessive moisture as it is not water resistant. Proper routing of the 17-inch wire harness will help prevent strain and damage during vehicle operation.

Quality Assurance and Warranty

Dorman manufactures this mass air flow sensor connector to meet or exceed OEM standards for fit, form, and function. The tin-plated terminals provide reliable conductivity and corrosion resistance. While specific warranty details may vary, Dorman typically offers coverage against defects in materials and workmanship to ensure long-term performance in Chevrolet, GMC, and Pontiac vehicles.